Abstract: A cross-layer QoS management method comprises monitoring a sequence of video frames (e.g., I, P and B frames of an MPEG video sequence) in a layer above the MAC layer; determining video frame sizes and a pattern of video frames per unit time; predicting a future data rate for a future time based on the video frame sizes and the pattern of video frames per unit time; and adjusting parameters (e.g., AIFS, CW, CWmax, CWmin) in the MAC layer based on the predicted future data rate for the future time, the parameters being associated with a time value for allowing access to a wireless medium.

Abstract: A method comprises buffering at least one frame for a particular access class, e.g., video, in a transmission queue; performing contention-based procedures for access to a wireless medium; computing the size of the at least one frame in the transmission queue; predicting the size of at least one future frame expected to arrive in the transmission queue during transmission, e.g., using a time-domain or wavelet-domain prediction algorithm, of the at least one frame in the transmission queue on the wireless medium, possibly using a known pattern of frames, e.g., an MPEG GoP; and adjusting a MAC layer time value, e.g., TXOP, based on the size of the at least one frame in the transmission queue and the predicted size of the at least one future frame.

Abstract: For example: DC-9 Airplane have 120 seats, five for one row, from left to right have “A” “B” “C” “D” “E”, “A” and “E” are by windows, between “B” and “C” is aisle, from front to back, there are 24 rows. Current Air line will send passenger seat in row 18-24 as first group to board, then 11-17, then after 2-10. Use this way have tow disadvantage: few persons go to one row, it need few times for each person put luggage on gear and take seat; if not the one by windows take seat first, when some one need go in, they will leave seat let him in and take seat again. This is time consume. It will be twenty minutes for DC-9 boarding passenger once. Therefore use the method I claim now, by windows go first avoid swap seat and every row has passenger set luggage take seat at same time. Theoretically it will take teen minutes to board DC-9 once.

Abstract: A Video-monitor system having basic function: like optic scope, zoom in the target from distance and show read-able picture on display device for shooter. Because digital video could be display on TV, LCD, Laptop and PDA in real-time, it would saving more time on each time to look at target to catch it up then optical scope. The further function: There is a smart marker in screen always move to the last point appeared at target, Let shooter know score immediately after each shooting. At meantime, system gathers and stores all information for recording and later research on shooting-skill training.

Abstract: A catalyst component for the (co)polymerization of olefins is provided. The catalyst comprises titanium, magnesium halogen and a mixed electron-donor and a catalyst for the (co)polymerization of olefins comprising:(A) the catalyst component; (B) an organic aluminum compound; and (C) an organic silicon compound. A polymer with high and adjustable stereospecificity and broad molecular weight distribution can be prepared by using the catalyst.

Abstract: A catalyst system for the (co)polymerization of propylene contains (A) a solid catalyst component comprising titanium, magnesium, halogen and a 1,3-diether; (B) an organic aluminum compound; and optionally (C) an organic silicon compound. In comparison with the prior art, stereospecificity of the polymer prepared by using the catalyst system of this invention evenl containing no external electron-donor is greater than 99%. Also, the activity of the catalyst system and hydrogen gas adjustability on the molecular weight of the polymer do not significantly decrease.

Abstract: A catalyst for the polymerization of propylene comprising components (A), (B) and (C) is provided. Component (A) is a solid product prepared by dissolving a halide of magnesium in a solvent system consisting of an organic epoxy compound, an organic phosphorus compound and an inert diluent to form a homogeneous solution; mixing the homogeneous solution with a halide of titanium to form a mixture; precipitating a solid from the mixture in the presence of an auxiliary precipitant; treating the solid with a polycarboxylic ester to load the ester on the solid; and treating the ester loaded solid with the halide of titanium and the inert diluent. Component (B) is an organic aluminium compound, and component (C) is an organic silicon compound. The particle size of the catalyst can be adjusted by increasing the amount of the inert diluent at a low ratio of the epoxy compound to the phosphorus compound.

Abstract: The present invention relates to a catalyst component for the (co)polymerization of olefins comprising titanium, magnesium, halogen and a mixed electron-donor and a catalyst for the (co)polymerization of olefins comprisin: (A) the catalyst component; (B) an organic aluminum compound; and (C) an organic silicon compound. The polymer with high and adjustable stereospecificity and broad molecular weight distribution can be prepared by using the catalyst.

Abstract: The present invention relates to a catalyst system for the (co)polymerization of propylene consisting of the following components:(A) a solid catalyst component comprising titanium, magnesium, halogen and a 1,3-diether; (B) an organic aluminum compound; and optionally (C) an organic silicon compound. In comparison with the prior art, stereospecificity of the polymer prepared by using the catalyst system of this invention even containing no external electron-donor is greater than 99%. Also, the activity of the catalyst system and hydrogen gas adjustability on the molecular weight of the polymer do not significantly decrease.